<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" auto-complete="on" class="login-form" label-position="left">
      <div class="title-container">
        <h3 class="title">用户登录</h3>
      </div>

      <el-form-item prop="phone">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="phone" v-model="loginForm.phone" auto-complete="on" name="phone" placeholder="请输入手机号" tabindex="1" type="text" />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          auto-complete="on"
          name="password"
          placeholder="请输入密码"
          tabindex="2"
          @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <el-form-item prop="code" class="code_form_item">
        <span class="svg-container">
          <el-icon class="el-icon-key"></el-icon>
        </span>
        <el-input
          :key="passwordType"
          ref="code"
          v-model="loginForm.code"
          auto-complete="on"
          name="code"
          placeholder="请输入验证码"
          tabindex="2"
          @keyup.enter.native="handleLogin" />
        <el-image :src="currentCode" @click="getCode(2)"></el-image>
      </el-form-item>
      <el-button :loading="loading" style="width: 100%; margin-bottom: 30px" type="primary" @click.native.prevent="handleLogin">登录 </el-button>
    </el-form>
  </div>
</template>

<script>
import { validPhone } from '@/utils/validate'

export default {
  name: 'Login',
  data() {
    const validatePhone = (rule, value, callback) => {
      if (!validPhone(value)) {
        callback(new Error('手机号格式不正确!'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (!value || value.length < 6) {
        callback(new Error('密码不得少于6位!'))
      } else {
        callback()
      }
    }
    const validateCode = (rule, value, callback) => {
      if (this.codeSuccess) {
        callback()
        return
      }
      if (!value || value == '') {
        callback(new Error('验证码不得为空!'))
        return
      }
      this.checkCode(this.uid, value, callback)
    }
    return {
      uid: '',
      codeSuccess: false,
      currentCode: '',
      loginForm: {
        phone: '',
        password: '',
        code: '',
      },
      loginRules: {
        phone: [{ required: true, trigger: 'blur', validator: validatePhone }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }],
        code: [{ required: true, trigger: 'blur', validator: validateCode }],
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true,
    },
  },
  created() {
    this.getCode(2)
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          this.$store
            .dispatch('user/login', this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || '/' })
              this.loading = false
            })
            .catch((error) => {
              this.loading = false
              this.codeSuccess = false
              this.getCode(2)
            })
        } else {
          return false
        }
      })
    },
    checkCode(uid, code, callback) {
      this.$store
        .dispatch('user/checkCaptcha', { uid: uid, code: code })
        .then((response) => {
          this.codeSuccess = true
          callback()
        })
        .catch((error) => {
          callback(new Error('验证码错误!'))
          this.getCode(2)
        })
    },
    //获取图形验证码
    getCode(type) {
      this.$store.dispatch('user/getCaptcha', type).then((response) => {
        if (response.success) {
          this.currentCode = response.other.image
          this.uid = response.data
        }
      })
    },
  },
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}

::v-deep.code_form_item {
  // width: 50%;
  .el-input {
    width: 60%;
  }

  .el-image {
    position: absolute;
    right: 0px;
    top: 2.5px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
    height: 47px;
    width: 30%;
    margin: 0;
  }
}
</style>
